While the z10yded repack is a well-known legacy release for low-end PCs, downloading it from unverified sources alongside "free" cheat tools is dangerous. If you proceed, use a Virtual Machine or scan all files with VirusTotal before opening them.
If you followed the instructions in that repack (hypothetically, for historical preservation), here is what the "Cheat Engine free" process looked like: fifa 14 repack multi13 readnfoz10yded cheat engine free